There are total 18 hours or 1080 minutes from 7am to 1am. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 10AM to 4AM | 8PM to 11AM | 11PM to 3AM |
| 2AM to 4AM | 1PM to 11AM | 2PM to 9AM |
| 8PM to 12PM | 3PM to 8PM | 4PM to 1AM |
| 5PM to 8PM | 1AM to 7AM | 3PM to 2AM |
| 4AM to 3AM | 4PM to 8AM | 8PM to 12PM |
| 9PM to 3AM | 2AM to 2PM | 5AM to 1AM |
